s/exut/exit/

Co-Authored-By: Aaron1011 <aa1ronham@gmail.com>

Author: oli-obk

src/fn_call.rs

@@ -333,7 +333,7 @@ pub trait EvalContextExt<'a, 'mir, 'tcx: 'a + 'mir>: crate::MiriEvalContextExt<'
                 // a frame with 'catch_panic' set, or we pop of all frames
                 //
                 // If we pop off all frames without encountering 'catch_panic',
-                // we exut.
+                // we exit.
                 //
                 // If we encounter 'catch_panic', we continue execution at that
                 // frame, filling in data from the panic